hard Set 81 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [_, 18, _] → [12, 11, _, 10] → [5, 7, _, 3, _]

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Answer: Row5[5]=7, Row5[3]=4, Row1[1]=76, Row4[3]=7, Row3[3]=17, Row3[1]=23, Row2[2]=35, Row2[1]=41

SubType
number-pyramid
Difficulty
hard
Levels
  • [76]
  • [41,35]
  • [23,18,17]
  • [12,11,7,10]
  • [5,7,4,3,7]
Base
  • 5
  • 7
  • 4
  • 3
  • 7
TopValue
76
HiddenCells
  • {"r":4,"c":4,"v":7}
  • {"r":4,"c":2,"v":4}
  • {"r":0,"c":0,"v":76}
  • {"r":3,"c":2,"v":7}
  • {"r":2,"c":2,"v":17}
  • {"r":2,"c":0,"v":23}
  • {"r":1,"c":1,"v":35}
  • {"r":1,"c":0,"v":41}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [57] → [_, 22] → [_, _, _] → [10, _, 5, 2] → [4, 6, _, _, _]

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Answer: Row5[5]=1, Row5[4]=1, Row3[2]=15, Row2[1]=35, Row4[2]=10, Row3[3]=7, Row3[1]=20, Row5[3]=4

SubType
number-pyramid
Difficulty
hard
Levels
  • [57]
  • [35,22]
  • [20,15,7]
  • [10,10,5,2]
  • [4,6,4,1,1]
Base
  • 4
  • 6
  • 4
  • 1
  • 1
TopValue
57
HiddenCells
  • {"r":4,"c":4,"v":1}
  • {"r":4,"c":3,"v":1}
  • {"r":2,"c":1,"v":15}
  • {"r":1,"c":0,"v":35}
  • {"r":3,"c":1,"v":10}
  • {"r":2,"c":2,"v":7}
  • {"r":2,"c":0,"v":20}
  • {"r":4,"c":2,"v":4}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [61] → [_, 36] → [9, _, _] → [_, _, _, 9] → [2, _, _, 8, 1]

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Answer: Row2[1]=25, Row5[3]=3, Row4[2]=5, Row3[3]=20, Row4[3]=11, Row3[2]=16, Row4[1]=4, Row5[2]=2

SubType
number-pyramid
Difficulty
hard
Levels
  • [61]
  • [25,36]
  • [9,16,20]
  • [4,5,11,9]
  • [2,2,3,8,1]
Base
  • 2
  • 2
  • 3
  • 8
  • 1
TopValue
61
HiddenCells
  • {"r":1,"c":0,"v":25}
  • {"r":4,"c":2,"v":3}
  • {"r":3,"c":1,"v":5}
  • {"r":2,"c":2,"v":20}
  • {"r":3,"c":2,"v":11}
  • {"r":2,"c":1,"v":16}
  • {"r":3,"c":0,"v":4}
  • {"r":4,"c":1,"v":2}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [137] → [69, 68] → [32, 37, _] → [_, _, _, 14] → [_, _, _, _, 7]

Show answer

Answer: Row5[4]=7, Row4[2]=20, Row4[3]=17, Row5[2]=10, Row5[1]=2, Row5[3]=10, Row4[1]=12, Row3[3]=31

SubType
number-pyramid
Difficulty
hard
Levels
  • [137]
  • [69,68]
  • [32,37,31]
  • [12,20,17,14]
  • [2,10,10,7,7]
Base
  • 2
  • 10
  • 10
  • 7
  • 7
TopValue
137
HiddenCells
  • {"r":4,"c":3,"v":7}
  • {"r":3,"c":1,"v":20}
  • {"r":3,"c":2,"v":17}
  • {"r":4,"c":1,"v":10}
  • {"r":4,"c":0,"v":2}
  • {"r":4,"c":2,"v":10}
  • {"r":3,"c":0,"v":12}
  • {"r":2,"c":2,"v":31}